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JP3986913B2 - Side airbag device - Google Patents

Side airbag device Download PDF

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Publication number
JP3986913B2
JP3986913B2 JP2002208691A JP2002208691A JP3986913B2 JP 3986913 B2 JP3986913 B2 JP 3986913B2 JP 2002208691 A JP2002208691 A JP 2002208691A JP 2002208691 A JP2002208691 A JP 2002208691A JP 3986913 B2 JP3986913 B2 JP 3986913B2
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JP
Japan
Prior art keywords
seat
airbag
storage portion
seat cushion
lap belt
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Fee Related
Application number
JP2002208691A
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Japanese (ja)
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JP2004050901A (en
Inventor
貴 本多
雄亮 西田
文夫 梅澤
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Honda Motor Co Ltd
TS Tech Co Ltd
Original Assignee
Honda Motor Co Ltd
TS Tech Co Ltd
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Publication date
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Priority to JP2002208691A priority Critical patent/JP3986913B2/en
Priority to US10/615,409 priority patent/US7021654B2/en
Publication of JP2004050901A publication Critical patent/JP2004050901A/en
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Publication of JP3986913B2 publication Critical patent/JP3986913B2/en
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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
    • B60R21/00—Arrangements or fittings on vehicles for protecting or preventing injuries to occupants or pedestrians in case of accidents or other traffic risks
    • B60R21/02—Occupant safety arrangements or fittings, e.g. crash pads
    • B60R21/16—Inflatable occupant restraints or confinements designed to inflate upon impact or impending impact, e.g. air bags
    • B60R21/23—Inflatable members
    • B60R21/231—Inflatable members characterised by their shape, construction or spatial configuration
    • B60R21/23138—Inflatable members characterised by their shape, construction or spatial configuration specially adapted for side protection
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
    • B60R21/00—Arrangements or fittings on vehicles for protecting or preventing injuries to occupants or pedestrians in case of accidents or other traffic risks
    • B60R21/02—Occupant safety arrangements or fittings, e.g. crash pads
    • B60R21/16—Inflatable occupant restraints or confinements designed to inflate upon impact or impending impact, e.g. air bags
    • B60R21/20—Arrangements for storing inflatable members in their non-use or deflated condition; Arrangement or mounting of air bag modules or components
    • B60R21/207—Arrangements for storing inflatable members in their non-use or deflated condition; Arrangement or mounting of air bag modules or components in vehicle seats
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
    • B60R21/00—Arrangements or fittings on vehicles for protecting or preventing injuries to occupants or pedestrians in case of accidents or other traffic risks
    • B60R21/02—Occupant safety arrangements or fittings, e.g. crash pads
    • B60R21/16—Inflatable occupant restraints or confinements designed to inflate upon impact or impending impact, e.g. air bags
    • B60R21/23—Inflatable members
    • B60R21/231—Inflatable members characterised by their shape, construction or spatial configuration
    • B60R21/23184—Tubular air bags connected to the vehicle at their two extremities

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Air Bags (AREA)
  • Seats For Vehicles (AREA)

Description

【０００１】
【発明の属する技術分野】
本発明は、乗員が着座するシートのシートバックおよびシートクッションの側面に跨がってエアバッグを折り畳み状態で収納し、車両の側面衝突時にインフレータが発生するガスでエアバッグを膨張させて車室の側部内面と乗員との間に展開させるサイドエアバッグ装置に関する。
【０００２】
【従来の技術】
かかるサイドエアバッグ装置は、例えば、米国特許第５４６４２４６号明細書により公知である。このサイドエアバッグ装置のエアバッグは筒状に形成されており、シートバックの上端部とシートクッションの前端部とを接続するように展開して乗員の胸部側面から腰部側面の範囲を拘束するようになっている。
【０００３】
【発明が解決しようとする課題】
ところで、シートにサイドエアバッグ装置およびシートベルト装置の両方を設けた場合、エアバッグがシートバックの上端部とシートクッションの前端部とを接続するように展開すると、乗員の腰部から腹部を拘束するように配置されたラップベルトと乗員との間にエアバッグが挟まれてしまい、エアバッグのスムーズな展開が妨げられて衝撃吸収効果を有効に発揮できなくなる可能性がある。
【０００４】
本発明は前述の事情に鑑みてなされたもので、サイドエアバッグ装置のエアバッグがシートベルト装置のラップベルトと干渉して展開が妨げられないようにすることを目的とする。
【０００５】
【課題を解決するための手段】
上記目的を達成するために、請求項１に記載された発明によれば、乗員が着座するシートのシートバックおよびシートクッションの側面に跨がってエアバッグを折り畳み状態で収納し、車両の側面衝突時にインフレータが発生するガスでエアバッグを膨張させて車室の側部内面と乗員との間に展開させるサイドエアバッグ装置において、折り畳み状態のエアバッグを収納するエアバッグカバーの第１収納部および第２収納部はそれぞれシートバックおよびシートクッションの側面の表皮の内側に埋め込まれ、前記第２収納部は、シートに設けたシートベルト装置のラップベルトと交差する位置の前後で前記シートクッションに形成された開口から突出して前記ラップベルトの外側に配置される突出部を備えることを特徴とするサイドエアバッグ装置が提案される。
【０００６】
上記構成によれば、サイドエアバッグ装置の折り畳み状態のエアバッグを収納するエアバッグカバーの第１収納部および第２収納部をそれぞれシートバックおよびシートクッションの側面の表皮の内側に埋め込み、第２収納部がシートに設けたシートベルト装置のラップベルトと交差する位置の前後で前記シートクッションに形成された開口から突出してラップベルトの外側に配置される突出部を備えるので、エアバッグはラップベルトと干渉することなくシートバックおよびシートクッションの側面から展開し、衝撃吸収効果を有効に発揮することができる。
【０００７】
また請求項２に記載された発明によれば、乗員が着座するシートのシートバックおよびシートクッションの側面に跨がってエアバッグを折り畳み状態で収納し、車両の側面衝突時にインフレータが発生するガスでエアバッグを膨張させて車室の側部内面と乗員との間に展開させるサイドエアバッグ装置において、折り畳み状態のエアバッグを収納するエアバッグカバーの第１収納部および第２収納部はそれぞれシートバックおよびシートクッションの側面の表皮の内側に埋め込まれ、シートに設けたシートベルト装置のラップベルトは、前記第２収納部と交差する位置で、該第２収納部の内側のシートクッションに形成したラップベルト挿通孔を通して該シートクッションの上部に導かれることを特徴とするサイドエアバッグ装置が提案される。
【０００８】
上記構成によれば、サイドエアバッグ装置の折り畳み状態のエアバッグを収納するエアバッグカバーの第１収納部および第２収納部をそれぞれシートバックおよびシートクッションの側面の表皮の内側に埋め込み、第２収納部がシートに設けたシートベルト装置のラップベルトと交差する位置で、そのラップベルトを第２収納部の内側のシートクッションに形成したラップベルト挿通孔を通して該シートクッションの上部に導びくので、エアバッグはラップベルトと干渉することなくシートバックおよびシートクッションの側面から展開し、衝撃吸収効果を有効に発揮することができる。
【０００９】
また請求項３に記載された発明によれば、乗員が着座するシートのシートバックおよびシートクッションの側面に跨がってエアバッグを折り畳み状態で収納し、車両の側面衝突時にインフレータが発生するガスでエアバッグを膨張させて車室の側部内面と乗員との間に展開させるサイドエアバッグ装置において、折り畳み状態のエアバッグを収納するエアバッグカバーは第１収納部および第２収納部を備え、前記第１収納部はシートバックの側面の表皮の内側に埋め込まれ、前記第２収納部はシートクッションの側面の表皮の外側に露出して、シートに設けたシートベルト装置のラップベルトと交差する位置で該ラップベルトの外側に配置され、前記第２収納部はシートクッションの側面に設けたカバーにより目視不能に覆われることを特徴とするサイドエアバッグ装置が提案される。
【００１０】
上記構成によれば、サイドエアバッグ装置の折り畳み状態のエアバッグを収納するエアバッグカバーの第１収納部をシートバックに埋め込んで第２収納部をシートクッションの側面の表皮の外側に露出させ、第２収納部をシートに設けたシートベルト装置のラップベルトと交差する位置でそのラップベルトの外側に配置し、かつ第２収納部をシートクッションの側面に設けたカバーにより目視不能に覆ったので、エアバッグはラップベルトと干渉することなくシートバックおよびシートクッションの側面から展開し、衝撃吸収効果を有効に発揮することができ、しかも第２収納部がカバーにより目視不能に覆われて外観が向上する。
【００１１】
尚、実施例のフロントシート１１は本発明のシートに対応する。
【００１２】
【発明の実施の形態】
以下、本発明の実施の形態を、添付図面に示した本発明の実施例に基づいて説明する。
【００１３】
図１〜図６は本発明の第１実施例を示すもので、図１はサイドエアバッグ装置を搭載したフロントシートの斜視図、図２は図１の２方向矢視図、図３は図２の３方向矢視図、図４は図２の４−４線拡大断面図、図５は図２の５−５線拡大断面図、図６はエアバッグモジュールの分解斜視図である。
【００１４】
自動車のフロントシート１１の右側面、つまりフロントドアやセンターピラーに対向する面に配置されるサイドエアバッグ装置は、シートバック１２およびシートクッション１３の右側面に埋め込まれたエアバッグモジュール１４を備える。エアバッグモジュール１４は、高圧ガスを発生するインフレータ１５と、インフレータ１５が発生するガスで膨張してシートバック１２の上端部とシートクッション１３の前端部とを接続するように展開するエアバッグ１６と、折り畳み状態のエアバッグ１６を収納するエアバッグカバー１７とで構成される。薄肉の合成樹脂で筒状に成形されたエアバッグカバー１７は、シートバック１２に埋め込まれた第１収納部１８と、シートクッション１３に埋め込まれた第２収納部１９と、第１収納部１８および第２収納部１９を接続してシートバック１２のリクライニング時に屈曲可能な蛇腹部２０とを備えており、それら第１、第２収納部１８，１９および蛇腹部２０にはエアバッグカバー１７を長手方向に沿って破断させるためのスリット１７ａ…が形成される。
【００１５】
上記構造のエアバッグカバー１７はシートバック１２およびシートクッション１３の表皮２１，２１を縫製２２した部分の内側に埋め込まれるが、その第２収納部１９の蛇腹部２０に近い位置に形成された突出部１９ａだけがシートクッション１３の側面に形成した二つの開口１３ｃ，１３ｄから外部に露出している。そしてシートクッション１３の表皮２１，２１を縫製２２した部分とエアバッグカバー１７の突出部１９ａの周囲とを接続するように、シートクッション１３に破断し易いティアライン１３ｂが形成される。ティアライン１３ｂはシートクッション１３の表皮２１を部分的に薄くしたり、ミシン目状の切り込みを入れたり、破断し易い糸で縫製しても良い。
【００１６】
シートベルト装置２６は乗員の腹部を拘束するラップベルト２７と、乗員の胸部を拘束するショルダーベルト２８とを備えており、ラップベルト２７の一端部は一方のシートフレーム２９に設けたラップベルトアンカー３０に固定されるとともに、ショルダーベルト２８の一端側はセンターピラー２３の上部に設けたスリップリング３１を摺動自在に経由してセンターピラー２３の下部に設けたリトラクタ３２に巻き取られる。そしてラップベルト２７およびショルダーベルト２８の他端部が摺動自在に貫通するタング３３が、他方のシートフレーム３４に設けたバックル３５に着脱自在に係止される。ラップベルトアンカー３０から延びるラップベルト２７の一端側は、シートクッション１３から外方に突出するエアバッグカバー１７の突出部１９ａと該シートクッション１３との隙間を下から上に通過している。即ち、折り畳まれたエアバッグ１６はラップベルト２７の外側に配置されている。
【００１７】
上記構造のサイドエアバッグ装置を備えた車両が側面衝突して所定値以上の加速度が検出されると、インフレータ１５が発生した高圧ガスが供給されたエアバッグ１６がエアバッグカバー１７内で膨張し、その圧力でエアバッグカバー１７がスリット１７ａ…に沿って破断し、更にフロントシート１１の表皮２１，２１の縫製２２およびティアライン１３ｂが破断し、そこに形成された開口からエアバッグ１６がシートバック１２の上端部とシートクッション１３の前端部とを接続するように展開し、乗員の右側面を拘束して側面衝突の衝撃から保護する。このとき、シートベルト装置２６のラップベルトアンカー３０から上方に延びるラップベルト２７が乗員の右腰部に当接しているが、この部分でエアバッグ１６を収納するエアバッグカバー１７の突出部１９ａがラップベルト２７の外側を通るように迂回しているため、エアバッグ１６がラップベルト２７と乗員との間で展開してしまう事態を回避し、ラップベルト２７との干渉を回避しながらエアバッグ１６を確実に展開させることができる。
【００１８】
次に、図７に基づいて本発明の第２実施例を説明する。
【００１９】
第１実施例ではエアバッグカバー１７に設けた突出部１９ａをラップベルト２７の外側を迂回させることでエアバッグ１６をラップベルト２７の外側に配置しているが、第２実施例ではエアバッグカバー１７の第２収納部１９を直線状に形成して全体をシートクッション１３の内部に埋め込むとともに、その第２収納部１９よりも内側の位置でシートクッション１３に形成したラップベルト挿通孔１３ａを通してラップベルト２７をシートクッション１３の上部に導いている。
【００２０】
この第２実施例によっても、エアバッグ１６をラップベルト２７の外側に配置し、ラップベルト２７との干渉を回避しながらエアバッグ１６を確実に展開させることができる。
【００２１】
次に、図８に基づいて本発明の第３実施例を説明する。
【００２２】
第３実施例は第１実施例の改良であって、エアバッグカバー１７の第２収納部１９がシートクッション１３の内部ではなく右側面に露出しており、第１実施例と同様にラップベルト２７の一端側は外方に突出するエアバッグカバー１７の突出部１９ａとシートクッション１３との隙間を下から上に通過している。そしてシートクッション１３の右側面に設けられたリクライニング機構（図示せず）を覆うカバー３６が、エアバッグカバー１７の第２収納部１９を覆っている。
【００２３】
従って、エアバッグ１６が膨張してエアバッグカバー１７がスリット１７ａ…に沿って破断したとき、第１収納部１８内のエアバッグ１６はシートバック１２の縫製２２を破断して展開するが、第２収納部１９内のエアバッグ１６はシートクッション１３の側面とリクライニング機構のカバー３６との隙間から展開する。この第３実施例によれば、エアバッグカバー１７の第２収納部１９がカバー３６によって外部から目視不能に覆われるために外観が向上する。
【００２４】
以上、本発明の実施例を詳述したが、本発明はその要旨を逸脱しない範囲で種々の設計変更を行うことが可能である。
【００２５】
例えば、第３実施例において、エアバッグ１６をシートクッション１３の側面とリクライニング機構のカバー３６との隙間から展開させる代わりに、カバー３６にティアラインを形成し、エアバッグ１６が膨張する圧力でティアラインが破断して形成された開口からエアバッグ１６を展開させても良い。
【００２６】
【発明の効果】
以上のように請求項１に記載された発明によれば、サイドエアバッグ装置の折り畳み状態のエアバッグを収納するエアバッグカバーの第１収納部および第２収納部をそれぞれシートバックおよびシートクッションの側面の表皮の内側に埋め込み、第２収納部がシートに設けたシートベルト装置のラップベルトと交差する位置の前後で前記シートクッションに形成された開口から突出してラップベルトの外側に配置される突出部を備えるので、エアバッグはラップベルトと干渉することなくシートバックおよびシートクッションの側面から展開し、衝撃吸収効果を有効に発揮することができる。
【００２７】
また請求項２に記載された発明によれば、サイドエアバッグ装置の折り畳み状態のエアバッグを収納するエアバッグカバーの第１収納部および第２収納部をそれぞれシートバックおよびシートクッションの側面の表皮の内側に埋め込み、第２収納部がシートに設けたシートベルト装置のラップベルトと交差する位置で、そのラップベルトを第２収納部の内側のシートクッションに形成したラップベルト挿通孔を通して該シートクッションの上部に導びくので、エアバッグはラップベルトと干渉することなくシートバックおよびシートクッションの側面から展開し、衝撃吸収効果を有効に発揮することができる。
【００２８】
また請求項３に記載された発明によれば、サイドエアバッグ装置の折り畳み状態のエアバッグを収納するエアバッグカバーの第１収納部をシートバックに埋め込んで第２収納部をシートクッションの側面の表皮の外側に露出させ、第２収納部をシートに設けたシートベルト装置のラップベルトと交差する位置でそのラップベルトの外側に配置し、かつ第２収納部をシートクッションの側面に設けたカバーにより目視不能に覆ったので、エアバッグはラップベルトと干渉することなくシートバックおよびシートクッションの側面から展開し、衝撃吸収効果を有効に発揮することができ、しかも第２収納部がカバーにより目視不能に覆われて外観が向上する。
【図面の簡単な説明】
【図１】 サイドエアバッグ装置を搭載したフロントシートの斜視図
【図２】 図１の２方向矢視図
【図３】 図２の３方向矢視図
【図４】 図２の４−４線拡大断面図
【図５】 図２の５−５線拡大断面図
【図６】 エアバッグモジュールの分解斜視図
【図７】 本発明の第２実施例に係る、前記図１に対応する図
【図８】 本発明の第３実施例に係る、前記図１の要部に対応する図
【符号の説明】
１１ フロントシート（シート）
１２ シートバック
１３ シートクッション
１３ａ ラップベルト挿通孔
１３ｃ 開口
１３ｄ 開口
１５ インフレータ
１６ エアバッグ
１７ エアバッグカバー
１８ 第１収納部
１９ 第２収納部
１９ａ 突出部
２１ 表皮
２６ シートベルト装置
２７ ラップベルト
３６ カバー[0001]
BACKGROUND OF THE INVENTION
The present invention stores an airbag in a folded state across the seat back of a seat on which a passenger is seated and a seat cushion, and inflates the airbag with a gas generated by an inflator at the time of a side collision of the vehicle. The present invention relates to a side airbag device that is deployed between an inner surface of a side portion of the vehicle and an occupant.
[0002]
[Prior art]
Such a side airbag device is known, for example, from US Pat. No. 5,464,246. The airbag of this side airbag device is formed in a cylindrical shape, and is deployed so as to connect the upper end portion of the seat back and the front end portion of the seat cushion so as to restrain the range from the chest side surface of the occupant to the waist side surface. It has become.
[0003]
[Problems to be solved by the invention]
By the way, when both the side airbag device and the seat belt device are provided on the seat, when the airbag is deployed so as to connect the upper end portion of the seat back and the front end portion of the seat cushion, the abdomen is restrained from the occupant's waist. Thus, there is a possibility that the airbag is sandwiched between the lap belt and the occupant so arranged that the airbag is prevented from being smoothly deployed and the impact absorbing effect cannot be effectively exhibited.
[0004]
The present invention has been made in view of the above circumstances, and an object of the present invention is to prevent an airbag of a side airbag device from interfering with a lap belt of a seat belt device to prevent deployment.
[0005]
[Means for Solving the Problems]
In order to achieve the above object, according to the first aspect of the present invention, the airbag is stored in a folded state across the side of the seat back and the seat cushion of the seat on which the occupant is seated. In a side airbag device in which an airbag is inflated with a gas generated by an inflator at the time of a collision and deployed between an inner surface of a side portion of a passenger compartment and an occupant, a first storage portion of an airbag cover for storing a folded airbag And the second storage part are embedded inside the skin of the side surface of the seat back and the seat cushion, respectively, and the second storage part is attached to the seat cushion before and after the position intersecting the lap belt of the seat belt device provided on the seat. protrudes from an opening formed Saidoeaba', characterized in that it comprises a protruding portion disposed on the outer side of the lap belt Device is proposed.
[0006]
According to the above configuration, the first storage portion and the second storage portion of the airbag cover that stores the folded airbag of the side airbag device are embedded inside the skin on the side surfaces of the seat back and the seat cushion, respectively. The airbag is provided with a protruding portion that is disposed outside the lap belt so as to protrude from the opening formed in the seat cushion before and after the position where the storage portion intersects the lap belt of the seat belt device provided on the seat. Can be deployed from the side of the seat back and seat cushion without interfering with each other, and the impact absorbing effect can be effectively exhibited.
[0007]
According to the second aspect of the present invention, the gas generated by the inflator at the time of a vehicle side collision is stored in a folded state across the side of the seat back and the seat cushion of the seat on which the occupant is seated. In the side airbag device in which the airbag is inflated and deployed between the inner side surface of the passenger compartment and the occupant, the first storage portion and the second storage portion of the airbag cover that stores the folded airbag are respectively The lap belt of the seat belt device embedded in the skin on the side of the seat back and the seat cushion and provided on the seat is formed on the seat cushion inside the second storage portion at a position intersecting with the second storage portion A side airbag device is proposed which is guided to the upper portion of the seat cushion through the lap belt insertion hole. .
[0008]
According to the above configuration, the first storage portion and the second storage portion of the airbag cover that stores the folded airbag of the side airbag device are embedded inside the skin on the side surfaces of the seat back and the seat cushion, respectively. At the position where the storage part intersects with the lap belt of the seat belt device provided on the seat, the lap belt is led to the upper part of the seat cushion through the lap belt insertion hole formed in the seat cushion inside the second storage part. The airbag can be deployed from the side of the seat back and seat cushion without interfering with the lap belt, and can effectively exhibit the impact absorbing effect.
[0009]
According to the invention described in claim 3, the gas generated by the inflator at the time of a side collision of the vehicle is stored in a folded state across the side of the seat back and the seat cushion of the seat on which the occupant is seated. In the side airbag device in which the airbag is inflated and deployed between the inner side surface of the passenger compartment and the occupant, the airbag cover for storing the folded airbag includes a first storage portion and a second storage portion. The first storage portion is embedded inside the skin on the side surface of the seat back, and the second storage portion is exposed outside the skin on the side surface of the seat cushion and intersects with a lap belt of a seat belt device provided on the seat. The second storage part is covered with a cover provided on a side surface of the seat cushion so as not to be visible. Side air bag device that is proposed.
[0010]
According to the above configuration, the first storage part of the airbag cover that stores the folded airbag of the side airbag device is embedded in the seat back, and the second storage part is exposed to the outside of the skin on the side surface of the seat cushion, Since the second storage portion is arranged outside the lap belt at a position intersecting with the lap belt of the seat belt device provided on the seat, and the second storage portion is covered with a cover provided on the side surface of the seat cushion so as to be invisible. The airbag can be deployed from the side of the seat back and seat cushion without interfering with the lap belt, effectively exhibiting the impact absorbing effect, and the second storage portion is covered with the cover in an invisible manner. improves.
[0011]
Note that the front seat 11 of the embodiment corresponds to the seat of the present invention.
[0012]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, embodiments of the present invention will be described based on examples of the present invention shown in the accompanying drawings.
[0013]
1 to 6 show a first embodiment of the present invention. FIG. 1 is a perspective view of a front seat equipped with a side airbag device, FIG. 2 is a view in the direction of the arrow 2 in FIG. 1, and FIG. 4 is an enlarged sectional view taken along line 4-4 of FIG. 2, FIG. 5 is an enlarged sectional view taken along line 5-5 of FIG. 2, and FIG. 6 is an exploded perspective view of the airbag module.
[0014]
A side airbag device disposed on a right side surface of a front seat 11 of an automobile, that is, a surface facing a front door or a center pillar, includes an airbag module 14 embedded in a right side surface of a seat back 12 and a seat cushion 13. The airbag module 14 includes an inflator 15 that generates high-pressure gas, and an airbag 16 that is inflated by the gas generated by the inflator 15 so as to connect the upper end portion of the seat back 12 and the front end portion of the seat cushion 13. The airbag cover 17 accommodates the airbag 16 in a folded state. The airbag cover 17 formed into a cylindrical shape with a thin synthetic resin has a first storage portion 18 embedded in the seat back 12, a second storage portion 19 embedded in the seat cushion 13, and a first storage portion 18. And a second bellows portion 20 that can be bent when the seat back 12 is reclining, and an air bag cover 17 is attached to the first and second bellows portions 18 and 19 and the bellows portion 20. Slits 17a for breaking along the longitudinal direction are formed.
[0015]
The airbag cover 17 having the structure described above is embedded inside the portion of the seat back 12 and the seat cushion 13 where the outer skins 21 and 21 are sewn 22, but is formed at a position close to the bellows portion 20 of the second storage portion 19. Only the portion 19a is exposed to the outside through two openings 13c and 13d formed on the side surface of the seat cushion 13. A tear line 13b that is easy to break is formed in the seat cushion 13 so as to connect the portion of the seat cushion 13 where the skins 21 and 21 are sewn 22 and the periphery of the protruding portion 19a of the airbag cover 17. The tear line 13b may be formed by partially thinning the skin 21 of the seat cushion 13, making a perforated cut, or sewing with a thread that is easy to break.
[0016]
The seat belt device 26 includes a lap belt 27 that restrains the abdomen of the occupant and a shoulder belt 28 that restrains the chest of the occupant. One end of the lap belt 27 is a lap belt anchor 30 provided on one seat frame 29. The shoulder belt 28 is wound around a retractor 32 provided at the lower portion of the center pillar 23 through a slip ring 31 provided at the upper portion of the center pillar 23 slidably. And the tongue 33 which the other end part of the lap belt 27 and the shoulder belt 28 penetrates slidably is latched by the buckle 35 provided in the other seat frame 34 so that attachment or detachment is possible. One end side of the lap belt 27 extending from the lap belt anchor 30 passes through the gap between the protruding portion 19a of the airbag cover 17 protruding outward from the seat cushion 13 and the seat cushion 13 from below to above. That is, the folded airbag 16 is disposed outside the lap belt 27.
[0017]
When a vehicle equipped with a side airbag device having the above structure collides with a side and an acceleration of a predetermined value or more is detected, the airbag 16 supplied with the high-pressure gas generated by the inflator 15 is inflated in the airbag cover 17. The air bag cover 17 is broken along the slits 17a by the pressure, and the sewing 22 and the tear line 13b of the skins 21 and 21 of the front seat 11 are further broken, and the air bag 16 is seated from the opening formed therein. The upper end portion of the back 12 and the front end portion of the seat cushion 13 are connected to each other, and the right side surface of the occupant is restrained and protected from the impact of the side collision. At this time, the lap belt 27 extending upward from the lap belt anchor 30 of the seat belt device 26 is in contact with the right waist portion of the occupant, and the protruding portion 19a of the airbag cover 17 that houses the airbag 16 is wrapped by this portion. Since the air bag 16 is detoured so as to pass outside the belt 27, the airbag 16 is prevented from being deployed between the lap belt 27 and the occupant, and the airbag 16 is moved while avoiding interference with the lap belt 27. Can be deployed reliably.
[0018]
Next, a second embodiment of the present invention will be described with reference to FIG.
[0019]
In the first embodiment, the airbag 19 is disposed outside the lap belt 27 by bypassing the protrusion 19a provided on the airbag cover 17 outside the lap belt 27. In the second embodiment, the airbag cover The second storage portion 17 is formed in a straight line so that the whole is embedded in the seat cushion 13, and is wrapped through a lap belt insertion hole 13 a formed in the seat cushion 13 at a position inside the second storage portion 19. The belt 27 is led to the upper part of the seat cushion 13.
[0020]
Also according to the second embodiment, the airbag 16 can be disposed outside the lap belt 27 and the airbag 16 can be reliably deployed while avoiding interference with the lap belt 27.
[0021]
Next, a third embodiment of the present invention will be described with reference to FIG.
[0022]
The third embodiment is an improvement of the first embodiment, in which the second storage portion 19 of the airbag cover 17 is exposed not on the inside of the seat cushion 13 but on the right side surface, and the lap belt as in the first embodiment. One end side of 27 passes through the gap between the protruding portion 19a of the airbag cover 17 protruding outward and the seat cushion 13 from below to above. A cover 36 covering a reclining mechanism (not shown) provided on the right side surface of the seat cushion 13 covers the second storage portion 19 of the airbag cover 17.
[0023]
Therefore, when the airbag 16 is inflated and the airbag cover 17 is broken along the slits 17a, the airbag 16 in the first storage portion 18 is deployed by breaking the sewing 22 of the seat back 12. 2 The airbag 16 in the storage portion 19 is deployed from the gap between the side surface of the seat cushion 13 and the cover 36 of the reclining mechanism. According to the third embodiment, the second storage part 19 of the airbag cover 17 is covered with the cover 36 in an invisible manner from the outside, so that the appearance is improved.
[0024]
As mentioned above, although the Example of this invention was explained in full detail, this invention can perform a various design change in the range which does not deviate from the summary.
[0025]
For example, in the third embodiment, instead of deploying the airbag 16 from the gap between the side surface of the seat cushion 13 and the cover 36 of the reclining mechanism, a tear line is formed in the cover 36 and the airbag 16 is inflated with a pressure at which the airbag 16 inflates. The airbag 16 may be deployed from an opening formed by breaking the line.
[0026]
【The invention's effect】
As described above, according to the first aspect of the present invention, the first storage portion and the second storage portion of the airbag cover that stores the folded airbag of the side airbag device are respectively connected to the seat back and the seat cushion. A protrusion that is embedded inside the side skin and protrudes from the opening formed in the seat cushion before and after the position where the second storage portion intersects the lap belt of the seat belt device provided on the seat, and is disposed outside the lap belt Since the airbag is provided with the portion, the airbag can be deployed from the side surfaces of the seat back and the seat cushion without interfering with the lap belt, and the impact absorbing effect can be effectively exhibited.
[0027]
According to the second aspect of the present invention, the first storage portion and the second storage portion of the airbag cover that stores the folded airbag of the side airbag device are used as the skins on the side surfaces of the seat back and the seat cushion, respectively. The seat cushion is inserted through a lap belt insertion hole formed in the seat cushion inside the second storage portion at a position where the second storage portion intersects with the lap belt of the seat belt device provided in the seat. Therefore, the airbag can be deployed from the side surfaces of the seat back and the seat cushion without interfering with the lap belt, and can effectively exert an impact absorbing effect.
[0028]
According to the invention described in claim 3, the first storage portion of the airbag cover that stores the folded airbag of the side airbag device is embedded in the seat back, and the second storage portion is attached to the side surface of the seat cushion. A cover that is exposed to the outside of the epidermis, is disposed outside the lap belt at a position that intersects with the lap belt of the seat belt device provided on the seat, and the second storage portion is provided on the side surface of the seat cushion. The air bag can be deployed from the side of the seat back and seat cushion without interfering with the lap belt, and the shock absorbing effect can be effectively exhibited, and the second storage portion is visually observed by the cover. The appearance is improved because it is covered with impossibility.
[Brief description of the drawings]
FIG. 1 is a perspective view of a front seat mounted with a side airbag device. FIG. 2 is a view taken in the direction of the arrow in FIG. 1. FIG. 3 is a view taken in the direction of the arrow in FIG. Fig. 5 is an enlarged sectional view taken along line 5-5 of Fig. 2. Fig. 6 is an exploded perspective view of an airbag module. Fig. 7 is a diagram corresponding to Fig. 1 according to a second embodiment of the present invention. FIG. 8 is a diagram corresponding to the main part of FIG. 1 according to a third embodiment of the present invention.
11 Front seat
12 Seat back 13 Seat cushion 13a Lap belt insertion hole
13c opening
13d opening 15 inflator 16 air bag 17 air bag cover 18 first storage portion 19 second storage portion 19a protruding portion 21 skin 26 seat belt device 27 lap belt 36 cover

Claims (3)

乗員が着座するシート（１１）のシートバック（１２）およびシートクッション（１３）の側面に跨がってエアバッグ（１６）を折り畳み状態で収納し、車両の側面衝突時にインフレータ（１５）が発生するガスでエアバッグ（１６）を膨張させて車室の側部内面と乗員との間に展開させるサイドエアバッグ装置において、
折り畳み状態のエアバッグ（１６）を収納するエアバッグカバー（１７）の第１収納部（１８）および第２収納部（１９）はそれぞれシートバック（１２）およびシートクッション（１３）の側面の表皮（２１）の内側に埋め込まれ、前記第２収納部（１９）は、シート（１１）に設けたシートベルト装置（２６）のラップベルト（２７）と交差する位置の前後で前記シートクッション（１３）に形成された開口（１３ｃ，１３ｄ）から突出して前記ラップベルト（２７）の外側に配置される突出部（１９ａ）を備えることを特徴とするサイドエアバッグ装置。The airbag (16) is stored in a folded state across the side of the seat back (12) and the seat cushion (13) of the seat (11) on which the occupant sits, and an inflator (15) is generated at the side collision of the vehicle In the side airbag device that inflates the airbag (16) with the gas to be deployed between the inner side surface of the passenger compartment and the occupant,
The first storage portion (18) and the second storage portion (19) of the airbag cover (17) for storing the folded airbag (16) are the skins on the side surfaces of the seat back (12) and the seat cushion (13), respectively. Embedded in the inner side of the seat cushion (13 ) before and after a position intersecting the lap belt (27) of the seat belt device (26) provided on the seat (11). The side airbag device includes a protruding portion (19a) that protrudes from the opening (13c, 13d) formed in the outer periphery of the lap belt (27). 乗員が着座するシート（１１）のシートバック（１２）およびシートクッション（１３）の側面に跨がってエアバッグ（１６）を折り畳み状態で収納し、車両の側面衝突時にインフレータ（１５）が発生するガスでエアバッグ（１６）を膨張させて車室の側部内面と乗員との間に展開させるサイドエアバッグ装置において、
折り畳み状態のエアバッグ（１６）を収納するエアバッグカバー（１７）の第１収納部（１８）および第２収納部（１９）はそれぞれシートバック（１２）およびシートクッション（１３）の側面の表皮（２１）の内側に埋め込まれ、シート（１１）に設けたシートベルト装置（２６）のラップベルト（２７）は、前記第２収納部（１９）と交差する位置で、該第２収納部（１９）の内側のシートクッション（１３）に形成したラップベルト挿通孔（１３ａ）を通して該シートクッション（１３）の上部に導かれることを特徴とするサイドエアバッグ装置。The airbag (16) is stored in a folded state across the side of the seat back (12) and the seat cushion (13) of the seat (11) on which the occupant sits, and an inflator (15) is generated at the side collision of the vehicle In the side airbag device that inflates the airbag (16) with the gas to be deployed between the inner side surface of the passenger compartment and the occupant,
The first storage portion (18) and the second storage portion (19) of the airbag cover (17) for storing the folded airbag (16) are the skins on the side surfaces of the seat back (12) and the seat cushion (13), respectively. The lap belt (27) of the seat belt device (26) embedded in the seat (11) and provided on the seat (11) is located at a position intersecting the second storage portion (19). 19) A side airbag device which is guided to the upper part of the seat cushion (13) through a lap belt insertion hole (13a) formed in the seat cushion (13) inside 19). 乗員が着座するシート（１１）のシートバック（１２）およびシートクッション（１３）の側面に跨がってエアバッグ（１６）を折り畳み状態で収納し、車両の側面衝突時にインフレータ（１５）が発生するガスでエアバッグ（１６）を膨張させて車室の側部内面と乗員との間に展開させるサイドエアバッグ装置において、
折り畳み状態のエアバッグ（１６）を収納するエアバッグカバー（１７）は第１収納部（１８）および第２収納部（１９）を備え、前記第１収納部（１８）はシートバック（１２）の側面の表皮（２１）の内側に埋め込まれ、前記第２収納部（１９）はシートクッション（１３）の側面の表皮（２１）の外側に露出して、シート（１１）に設けたシートベルト装置（２６）のラップベルト（２７）と交差する位置で該ラップベルト（２７）の外側に配置され、前記第２収納部（１９）はシートクッション（１３）の側面に設けたカバー（３６）により目視不能に覆われることを特徴とするサイドエアバッグ装置。The airbag (16) is stored in a folded state across the side of the seat back (12) and the seat cushion (13) of the seat (11) on which the occupant sits, and an inflator (15) is generated at the side collision of the vehicle In the side airbag device that inflates the airbag (16) with the gas to be deployed between the inner side surface of the passenger compartment and the occupant,
The airbag cover (17) for storing the folded airbag (16) includes a first storage portion (18) and a second storage portion (19), and the first storage portion (18) is a seat back (12). The seat belt provided in the seat (11) is embedded inside the skin (21) on the side surface of the seat, and the second storage portion (19) is exposed to the outside of the skin (21) on the side surface of the seat cushion (13). A cover (36) provided on the outer side of the lap belt (27) at a position intersecting with the lap belt (27) of the device (26), and the second storage portion (19) provided on the side surface of the seat cushion (13) The side airbag device is covered with an invisible eye.
JP2002208691A 2002-07-17 2002-07-17 Side airbag device Expired - Fee Related JP3986913B2 (en)

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US7021654B2 (en) 2006-04-04
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